How to make a transparent NSView subclass handle mouse events?

Question

The problem

I have a transparent NSView on a transparent NSWindow. The view\'s drawRect: method draws some content (NSIma

Answer 1

You can do:

NSView* windowContent = [window contentView];
[windowContent setWantsLayer:YES]

Making sure that the background is transparent:

[[windowContent layer] setBackgroundColor:[[NSColor clearColor] CGColor]];

Another option would be to add a transparent background image that fills the contentView.